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SOLVING THE MODE IDENTIFICATION PROBLEM IN ASTEROSEISMOLOGY OF F STARS OBSERVED WITH KEPLER

TitreSOLVING THE MODE IDENTIFICATION PROBLEM IN ASTEROSEISMOLOGY OF F STARS OBSERVED WITH KEPLER
Type de publicationJournal Article
Year of Publication2012
AuteursWhite, TR, Bedding, TR, Gruberbauer, M, Benomar, O, Stello, D, Appourchaux, T, Chaplin, WJ, Christensen-Dalsgaard, J, Elsworth, YP, Garcia, RA, Hekker, S, Huber, D, Kjeldsen, H, Mosser, B, Kinemuchi, K, Mullally, F, Still, M
JournalAstrophysical Journal Letters
Volume751
Date PublishedJun
ISBN Number2041-8205
Numéro d'accèsWOS:000304205000014
Résumé

Asteroseismology of F-type stars has been hindered by an ambiguity in identification of their oscillation modes. The regular mode pattern that makes this task trivial in cooler stars is masked by increased line widths. The absolute mode frequencies, encapsulated in the asteroseismic variable epsilon, can help solve this impasse because the values of epsilon implied by the two possible mode identifications are distinct. We find that the correct epsilon can be deduced from the effective temperature and the line widths and we apply these methods to a sample of solar-like oscillators observed with Kepler.

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